What happens when you stop Semaglutide

How long you can stay on semaglutide

There is no labeled maximum. Wegovy is approved to reduce excess body weight and maintain that reduction long term ^[1]. In the SELECT heart trial, people took Wegovy injection for a median 37.3 months ^[1]. Longer-term safety is still being studied; the boxed thyroid tumor warning applies for as long as you use it ^[1].

Many people ask whether they must take it forever. The label does not say you must. What the data show is what happens after stopping, covered in the next section. Costs over time are on our semaglutide cost page.

What happens after you stop

The STEP 1 extension followed people for a year after semaglutide 2.4 mg and placebo were stopped at week 68. The semaglutide group had lost 17.3%. By week 120 they had regained 11.6 percentage points, about two-thirds, leaving a net loss of 5.6% vs 0.1% for placebo ^[2]. Improvements in heart and metabolic measures largely returned toward where they started ^[2].

Semaglutide also leaves the body slowly. The label tells people planning a pregnancy to stop at least 2 months ahead because of its long half-life ^[1]. Side effects tied to the drug would be expected to fade as it clears, but the label does not give a timeline.

Cold turkey, tapering and restarting

The labels describe how to raise the dose, not how to lower it, and contain no taper schedule. We did not find a withdrawal syndrome in the label sections we reviewed. Talk to your prescriber before stopping, because the label flags insulin and sulfonylurea doses for adjustment alongside semaglutide ^[1].

Restarting is where the label is specific: if 2 or more Wegovy doses in a row are missed, contact your provider, who may restart at a lower dose ^[1]. Stopping for 3 months and then resuming at your old dose is not a label schedule.

Stopping before surgery or pregnancy

Surgery. The label says there is not enough data to recommend pausing semaglutide or changing fasting before anesthesia, but warns of a risk of food entering the lungs; tell your surgeon and anesthesia team you take it ^[1]. They decide whether to hold doses. Details in semaglutide interactions.

Pregnancy. Stop at least 2 months before a planned pregnancy, and stop Wegovy when a pregnancy is recognized ^[1].

Side effects that make people quit

In the Wegovy trials, 6.8% of adults on 2.4 mg stopped because of side effects vs 3.2% on placebo, mostly nausea, vomiting and diarrhea ^[1]. Before quitting, ask your prescriber about the label option of delaying a dose increase by 4 weeks ^[1].

• Heartburn, burping and bloating: reflux, burping (eructation) and bloating are listed reactions ^[1]. The label does not mention sulfur burps by name.
• Diarrhea: 30% vs 16% on placebo ^[1]. Diarrhea that will not stop can cause dehydration and kidney injury; call your prescriber ^[1].
• Vomiting you cannot stop: call your prescriber the same day; severe vomiting can lead to kidney injury ^[1].
• Hair loss: 3.3% vs 1% on placebo ^[1]. Whether hair regrows after stopping is not addressed in the label.

Full rates are in semaglutide side effects.

When it seems to stop working

The label does not describe semaglutide losing effect over time, and our sources do not measure it. Response varies from the start: in STEP 1, 13.6% of people on semaglutide did not reach 5% weight loss at 68 weeks ^[3]. If your weight has stalled, your prescriber can review your dose, which for Wegovy can go to 7.2 mg in some adults ^[1], or a switch; see switching GLP-1 medicines and semaglutide results.